EP 0792506 A4 19980819 - REFRESH STRATEGY FOR DRAMS
Title (en)
REFRESH STRATEGY FOR DRAMS
Title (de)
AUFFRISCHSTRATEGIE FÜR DRAM-SPEICHER
Title (fr)
PROCEDE DE REGENERATION POUR MEMOIRE RAM DYNAMIQUE
Publication
Application
Priority
- US 9610854 W 19960627
- US 52795095 A 19950914
Abstract (en)
[origin: WO9710602A1] An improved method of accessing dynamic random access memory (DRAM) banks (120, 130, 150, 160) during refresh cycles contemplates sequentially accessing DRAM banks which do not share common filtering capacitors (140, 170). In this manner, voltage drops caused by refresh accesses are not observed in consecutive clock cycles at the same filtering capacitors so that the filtering capacitors (140, 170) will have sufficient recovery time to restore the supply voltage to the original voltage level before another refresh hit occurs at the same capacitor. In this manner, significant voltage drops are alleviated at the voltage supply inputs (110) to the DRAM banks (120, 130, 150, 160).
IPC 1-7
IPC 8 full level
G11C 11/403 (2006.01); G11C 5/00 (2006.01); G11C 11/406 (2006.01); G11C 11/407 (2006.01); G11C 11/408 (2006.01)
CPC (source: EP KR US)
G11C 11/406 (2013.01 - EP US); G11C 11/407 (2013.01 - KR); G11C 11/408 (2013.01 - EP US)
Citation (search report)
- [A] EP 0320809 A2 19890621 - NAT SEMICONDUCTOR CORP [US]
- [X] "STAGGERED REFRESH MEMORY FOR PERSONAL COMPUTER SYSTEMS", IBM TECHNICAL DISCLOSURE BULLETIN, vol. 36, no. 10, 1 October 1993 (1993-10-01), pages 223 - 225, XP000412243
- See references of WO 9710601A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9710602 A1 19970320; AU 6393496 A 19970401; CN 1130730 C 20031210; CN 1169205 A 19971231; DE 69621419 D1 20020704; DE 69621419 T2 20030116; EP 0792506 A1 19970903; EP 0792506 A4 19980819; EP 0792506 B1 20020529; FI 113572 B 20040514; FI 972050 A0 19970514; FI 972050 A 19970514; IN 192635 B 20040508; JP 4166274 B2 20081015; JP H10509269 A 19980908; KR 100248259 B1 20000315; KR 970707554 A 19971201; RU 2163035 C2 20010210; TW 303469 B 19970421; US 5654929 A 19970805; WO 9710601 A1 19970320
DOCDB simple family (application)
US 9610855 W 19960627; AU 6393496 A 19960627; CN 96191400 A 19960627; DE 69621419 T 19960627; EP 96922577 A 19960627; FI 972050 A 19970514; IN 1173MA1996 A 19960703; JP 51068697 A 19960627; KR 19970703236 A 19970513; RU 97110100 A 19960627; TW 85108858 A 19960720; US 52795095 A 19950914; US 9610854 W 19960627